quantum Hall resistance standard, von Klitzing constant, NMI resistance ratio, sub-ppm accuracy

6020Q Quantum Hall Ratio Resistance Bridge

Self-Calibration Quantum Hall Ratio/Resistance Bridge

  • NEW:
    • current algorithm following CCC methodology
    • zero-filter option
    • microcontroller
    • capacitive touchscreen and user interface
  • LEMO connectors for resistor connections
  • Quantum Hall applications, including gallium arsenide and graphene sample measurements
  • Vcr, Vxx, and Vxy measurements
  • Self-calibration of 27-bit binary wound current comparator and a nanovolt detector
  • Detector reading
  • Range: 0.1 Ω – 13 kΩ
  • Best Accuracy: < 0.015 µΩ/Ω
  • Maximum ratio: 14:1
  • Resistance range: 0.1 Ω to 13 kΩ
  • Capacitive 7″ touch screen
  • IEEE-488.2 standard
MI 6820T Compact Dry Quantum Hall Resistance System | primary resistance metrology.

6820T Compact Dry QHR System

  • Cryogen-Free Dry System
  • Best Accuracy to 0.003 × 10-6 with 6200A CCC
  • Best Accuracy to 0.015 × 10-6 with 6020Q DCC
  • 5 Tesla standard system magnet
  • Base temperature: < 3.6 K
  • Low operating costs
  • Direct transfer to 100 Ω, 1 kΩ, 10 kΩ, and 100 kΩ standards
  • 6020Q system range: 0.1 Ω to 1 MΩ with 6200A or 100 kΩ
  • Optional multiple value arrays of RK/2, 100 Ω, 1 kΩ, 10 kΩ and 100 kΩ
  • Simultaneously compare Hall bar and arrays when using 6200
  • Current Range when using 6200A
  • Three high-current ranges +/- (50 mA, 100 mA and 150 mA)
  • Five low-current ranges +/- (100 μA, 333 μA, 1 mA, 3.3 mA, and 10 mA)
MI 6800C cryogen-free Quantum Hall Resistance (QHR) Standard | cryogen-free QHR system.

6800C QHR Standard

  • System accuracy to < 0.015 × 10-6 with 6020Q
  • System accuracy to < 0.003 × 10-6 with 6200A
  • Built-in Rxx (uV) measurements in ADCC bridge
  • 9 Tesla standard system magnet
  • Up to 14 Tesla available
  • No liquid helium required
  • Stable, controlled sample environment
  • Temperature range: 1.3 K – 300 K
  • Low operating costs
  • System range: 0.1 Ω – 10 kΩ (with 6020Q)
  • Graphene compatible
  • Features AccuBridge® technology
  • Dual sample probe